Fuel Mix Calculator
Analyze the cost, energy output, and carbon intensity of your electricity generation mix.
Source 1: Natural Gas
Total electricity produced by this source in a year.
Levelized Cost of Energy (LCOE) for this source.
Tonnes of CO₂ equivalent emissions per megawatt-hour.
Source 2: Solar PV
Total electricity produced by this source in a year.
Levelized Cost of Energy (LCOE) for this source.
Tonnes of CO₂ equivalent emissions per megawatt-hour.
Source 3: Wind
Total electricity produced by this source in a year.
Levelized Cost of Energy (LCOE) for this source.
Tonnes of CO₂ equivalent emissions per megawatt-hour.
Source 4: Coal
Total electricity produced by this source in a year.
Levelized Cost of Energy (LCOE) for this source.
Tonnes of CO₂ equivalent emissions per megawatt-hour.
Total Annual Generation
Average Cost
$57.83 / MWh
Total Emissions
348,000 tCO₂e
Average Carbon Intensity
0.30 tCO₂e / MWh
Generation Mix Breakdown (%)
Results Summary Table
| Fuel Source | Generation (MWh) | Mix (%) | Total Cost ($) | Total Emissions (tCO₂e) |
|---|
What is a fuel mix calculator?
A fuel mix calculator is a tool used to analyze the combined characteristics of a portfolio of energy sources. In the context of electricity generation, it allows users to input various amounts of power from different sources—such as natural gas, solar, wind, and coal—to determine the overall performance of the system. Key metrics calculated include the total energy generated, the average cost per unit of energy, and the total carbon emissions. This type of calculator is essential for energy planners, policymakers, investors, and researchers who need to balance economic costs, environmental impacts, and energy reliability. Understanding your energy portfolio is crucial, and a carbon footprint calculator can provide further insights into your environmental impact.
The fuel mix calculator Formula and Explanation
The calculations are based on weighted averages, where the contribution of each fuel source is proportional to the amount of energy it generates. The fundamental formulas are:
- Total Generation (G_total) = Σ G_i (The sum of generation from each source i)
- Total Cost (C_total) = Σ (G_i * C_i) (The sum of the generation of each source multiplied by its specific cost)
- Total Emissions (E_total) = Σ (G_i * E_i) (The sum of the generation of each source multiplied by its carbon factor)
- Average Cost = C_total / G_total
- Average Carbon Intensity = E_total / G_total
These formulas provide a comprehensive overview of the fuel mix’s economic and environmental profile.
Variables Table
| Variable | Meaning | Unit (auto-inferred) | Typical Range |
|---|---|---|---|
| G_i | Generation from source ‘i’ | MWh (Megawatt-hour) | 0 – 10,000,000+ |
| C_i | Cost of source ‘i’ | $ / MWh | $20 (wind) – $200+ (peaker plants) |
| E_i | Emissions from source ‘i’ | tCO₂e / MWh | 0.01 (wind) – 1.0+ (lignite coal) |
Practical Examples
Example 1: Fossil-Fuel Heavy Grid
Imagine a grid that relies heavily on traditional power sources. The inputs might look like this:
- Natural Gas Generation: 800,000 MWh, Cost: $50/MWh, Carbon: 0.4 tCO₂e/MWh
- Coal Generation: 600,000 MWh, Cost: $110/MWh, Carbon: 0.9 tCO₂e/MWh
The result would be a high average cost and a significant carbon footprint, highlighting the economic and environmental burden of such a mix. The high carbon output is a major factor in climate change, a topic we explore further in our report on the future of renewable energy.
Example 2: Renewables-Focused Grid
Now consider a modern grid prioritizing renewable energy:
- Solar PV Generation: 700,000 MWh, Cost: $35/MWh, Carbon: 0.05 tCO₂e/MWh
- Wind Generation: 900,000 MWh, Cost: $40/MWh, Carbon: 0.01 tCO₂e/MWh
- Natural Gas (for backup): 200,000 MWh, Cost: $70/MWh, Carbon: 0.4 tCO₂e/MWh
This fuel mix would result in a much lower average cost and dramatically lower carbon emissions, demonstrating the benefits of investing in renewable technology. A solar panel output calculator can help in planning such investments.
How to Use This fuel mix calculator
Using this calculator is a straightforward process:
- Enter Generation Data: For each of the four fuel sources, input the total annual electricity generation in Megawatt-hours (MWh).
- Enter Cost Data: Input the Levelized Cost of Energy (LCOE) for each source. This figure represents the average revenue per unit of electricity generated that would be required to recover the costs of building and operating a generating plant over an assumed financial life and duty cycle.
- Enter Carbon Data: Input the carbon factor for each source, which is the amount of carbon dioxide equivalent emitted per MWh of electricity generated.
- Analyze the Results: The calculator will instantly update the total generation, average cost, average carbon intensity, and total emissions. The chart and table will also adjust to provide a visual breakdown of your energy portfolio.
- Experiment: Adjust the values to see how adding more renewables or reducing fossil fuels impacts your overall mix. Use the “Reset” button to return to the default values.
Key Factors That Affect a fuel mix calculator
- Fuel Price Volatility: The cost of fossil fuels like natural gas and coal can fluctuate significantly, impacting the overall cost of energy.
- Technology Costs: The cost of renewable technologies, like solar panels and wind turbines, has been decreasing, making them more competitive. Learning about a wind turbine power calculator can show the potential of this technology.
- Government Policies & Subsidies: Tax credits, subsidies, and carbon pricing can either incentivize or penalize certain types of energy sources.
- Geographic Location: The availability of resources like consistent sun, strong wind, or access to fuel deposits heavily influences a region’s optimal fuel mix.
- Grid Infrastructure & Storage: The ability of the electrical grid to handle intermittent power from renewables and the availability of energy storage (like batteries) are critical.
- Consumer Demand: Patterns in electricity consumption, including peak demand times, dictate the need for different types of power plants (baseload vs. peaker).
Frequently Asked Questions (FAQ)
A Megawatt-hour is a unit of energy equivalent to one million watt-hours. It’s a standard measure for large-scale electricity generation and consumption.
Government agencies (like the U.S. EIA), international organizations (like the IEA), and research institutions (like NREL and Lazard) publish regular reports on the Levelized Cost of Energy and emissions factors.
The average cost is a weighted average. Sources that generate more energy have a larger impact on the average. If a large portion of your energy comes from a cheap source, the average cost will be closer to that source’s cost.
LCOE is a measure of the average net present cost of electricity generation for a generating plant over its lifetime. It is used to compare different methods of electricity generation on a consistent basis. Check out our Levelized Cost of Energy (LCOE) calculator for a deeper dive.
The cost associated with renewables (LCOE) includes the manufacturing, construction, maintenance, and operational costs of the power plant over its lifetime, not the fuel itself.
It represents the amount of greenhouse gas emissions (measured in tonnes of CO₂ equivalent) produced for every MWh of electricity generated. It includes lifecycle emissions from construction and fuel extraction where applicable.
Energy storage, such as large-scale batteries, allows energy generated from intermittent sources like solar and wind to be stored and released when needed. This increases grid reliability and allows for a higher penetration of renewables.
This calculator is designed for four primary sources for simplicity. However, you can combine similar sources. For example, you could group all renewable sources into one input by calculating their combined average cost and carbon factor.